IBD Science for Patients

If you have ever gone for a long run or pushed yourself in gym class, you have probably felt that “burn” in your muscles. That is caused by lactate (often called lactic acid). For decades, scientists thought lactate was just a waste product – the “exhaust fumes” of exercise. However, a massive new scientific review has revealed that lactate is actually a powerful “messenger” that helps control inflammation in diseases like Crohn’s and ulcerative colitis (UC).

What the Research Found

This was not a single trial of patients, but a comprehensive scientific review published on 6 July 2026 in the journal Signal Transduction and Targeted Therapy. It summarised thousands of findings from recent years to explain a brand-new process called ‘lactylation’.

Lactylation is like a “biological tagging system.” When your body produces lactate, it uses it to “tag” certain proteins in your cells. These tags act like instructions, telling your cells to change their behaviour.

The review highlighted several major breakthroughs for IBD:

• The Repair Signal: In ulcerative colitis, these lactate “tags” tell your immune cells (macrophages) to stop attacking and start repairing the gut lining.
• Crohn’s Clues: Researchers found that in Crohn’s disease, this lactate tagging system becomes “abnormal,” which can lead to more severe inflammation.
• Natural Fighting Power: The review even found that certain traditional treatments can “switch on” this tagging system to protect the gut from damage and oxidative stress.

Why This Matters to You as a Patient

Understanding “lactylation” is a huge deal for the future of IBD care for three main reasons:

1. New Ways to Measure Your Health: Scientists believe they can use these lactate “tags” as biomarkers. In the future, a simple blood test might look for these tags to predict if you are about to have a flare-up or if a treatment is working, potentially reducing the need for colonoscopies.
2. Targeted Treatments: Now that we know lactate acts as a “switch” for gut repair, drug companies are looking for ways to flip that switch on purpose. This could lead to brand-new medicines that don’t just dampen your whole immune system but specifically tell your body to “start healing the gut now”.
3. The Diet Connection: Because lactate is created by how your body processes sugar and energy, this research is the “missing link” between what you eat and how your immune system behaves. It provides scientific proof that metabolic health is deeply tied to IBD remission.

While this is a deep dive into the “manual” of how our cells work, it proves that science is finding new ways to use the body’s own natural signals to fight IBD.

Explore the Research

• Original Review: Protein lactylation in health and diseases.
• Metabolic Health: How diet and microbiome links drive IBD inflammation.